US2844443A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for oil preheat for carbon black furnace
Assignee: Phillips Petroleum Co
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Filing: 1957-03-20
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Granted: 1958-07-22
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Expires: 1977-03-20
Abstract
No abstract record available.
Inventors
- 👤 William R King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:16
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/50
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
137 words
IN A PROCESS FOR PRODUCING CARBON BLACK BY PARTIAL COMBUSTION OF AN OIL FED WITH FREE-OXYGEN-CONTAINING GAS IN A COMBUSTION ZONE WHEREIN THE OIL FEED IS PREHEATED BEFORE INTRODUCTION TO SAID ZONE, THE IMPROVEMENT COMPRISING PASSING SAID FEED IN INDIRECT HEAT EXCHANGE WITH THE GASEOUS EFFLUENT FROM SAID COMBUSTION ZONE TO PREHEAT SAME TO A TEMPERATURE ABOVE THE DESIRED PREHEAT TEMPERATURE BUT BELOW INCIPIENT CRACKING TEMPERATURE PASSING A FIRST PORTION OF THE RESULTING PREHEATED FEED IN INDIRECT HEAT EXCHANGE WITH A HEAT EXCHANGE FLUID SO AS TO REDUCE ITS PREHEAT TEMPERATURE, MIXING THE RESULTING FIRST PORTION AT LOWER TEMPERATURE WITH A SECOND PORTION OF SAID PREHEATED FEED AT HIGHER TEMPERATURE, PROPORTIONING SAID FIRST AND SECOND PORTIONS OF PREHEATED FEED SO AS TO OBTAIN THE DESIRED PREHEAT TEMPERATURE, AND PASSING THE RESULTING PREHEATED FEED TO SAID COMBUSTION ZONE.
Claim 2
Dependent Claim
137 words
IN A PROCESS FOR PRODUCING CARBON BLACK BY PARTIAL COMBUSTION OF AN OIL FED WITH FREE-OXYGEN-CONTAINING GAS IN A COMBUSTION ZONE WHEREIN THE OIL FEED IS PREHEATED BEFORE INTRODUCTION TO SAID ZONE, THE IMPROVEMENT COMPRISING PASSING SAID FEED IN INDIRECT HEAT EXCHANGE WITH THE GASEOUS EFFLUENT FROM SAID COMBUSTION ZONE TO PREHEAT SAME TO A TEMPERATURE ABOVE THE DESIRED PREHEAT TEMPERATURE BUT BELOW INCIPIENT CRACKING TEMPERATURE PASSING A FIRST PORTION OF THE RESULTING PREHEATED FEED IN INDIRECT HEAT EXCHANGE WITH A HEAT EXCHANGE FLUID SO AS TO REDUCE ITS PREHEAT TEMPERATURE, MIXING THE RESULTING FIRST PORTION AT LOWER TEMPERATURE WITH A SECOND PORTION OF SAID PREHEATED FEED AT HIGHER TEMPERATURE, PROPORTIONING SAID FIRST AND SECOND PORTIONS OF PREHEATED FEED SO AS TO OBTAIN THE DESIRED PREHEAT TEMPERATURE, AND PASSING THE RESULTING PREHEATED FEED TO SAID COMBUSTION ZONE.
Claim 3
Dependent Claim
111 words
APPARATUS, COMPRISING IN COMBINATION A CARBON BLACK FURNACE HAVING AN OIL INJECTION LINE, AN AIR INJECTION LINE, AND A GASEOUS EFFLUENT LINE, AN INDIRECT HEAT EXCHANGER IN SAID EFFLUENT LINE, AN INLET OIL LINE AND A FIRST EFFLUENT OIL LINE CONNECTED WILTH SAID EXCHANGER, A FLUID INDIRECT HEAT EXCHANGER CONNECTED IN SAID OIL EFFLUENT LINE HAVING MEANS FOR PASSIG FLUID THERETHRU IN INDIRECT HEAT EXCHANGE WITH OIL, A SECOND OIL EFFLUENT LINE FROM SAID FLUID HEAT EXCHANGER CONNECTED WITH SAID OIL INJECTION LINE, AN OIL BY-PASS LINE FROM SAID FIRST EFFLUENT OIL LINE TO SAID SECOND EFFLUENT OIL LINE, AND MEANS FOR REGULATING THE FLOW OF OIL THRU SAID BY-PASS LINE.
Claim 4
Dependent Claim
111 words
APPARATUS, COMPRISING IN COMBINATION A CARBON BLACK FURNACE HAVING AN OIL INJECTION LINE, AN AIR INJECTION LINE, AND A GASEOUS EFFLUENT LINE, AN INDIRECT HEAT EXCHANGER IN SAID EFFLUENT LINE, AN INLET OIL LINE AND A FIRST EFFLUENT OIL LINE CONNECTED WILTH SAID EXCHANGER, A FLUID INDIRECT HEAT EXCHANGER CONNECTED IN SAID OIL EFFLUENT LINE HAVING MEANS FOR PASSIG FLUID THERETHRU IN INDIRECT HEAT EXCHANGE WITH OIL, A SECOND OIL EFFLUENT LINE FROM SAID FLUID HEAT EXCHANGER CONNECTED WITH SAID OIL INJECTION LINE, AN OIL BY-PASS LINE FROM SAID FIRST EFFLUENT OIL LINE TO SAID SECOND EFFLUENT OIL LINE, AND MEANS FOR REGULATING THE FLOW OF OIL THRU SAID BY-PASS LINE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-21 | 1962-01-20 | 1962-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-21 | 1966-01-20 | 1966-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-21 | 1970-01-20 | 1970-07-22 | $7700.00 | Window Closed / Lapsed |